The Working Principle of the Fully Automatic Dosage Device: Utilizing time-programmed control, this method does not require the support of instruments. First, set the automatic dosing cycle, dosage amount, dosing time, and dosing frequency according to the system's operational needs. During subsequent system operation, when the dosing cycle arrives, the metering pump automatically starts dosing until the specified time, at which point it shuts off. During the waste discharge cycle, the metering pump stops dosing and continues to discharge until the specified time.Continue operations by replenishing the chemicals lost to effluent, maintaining the system's drug concentration at a normal level, and shutting off the dosing pump at the specified time.